We show how using the differential Galois theory one can find effectively necessary conditions for the integrability of Hamiltonian systems with homogeneous potentials.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-bc94-0-10, author = {Guillaume Duval and Andrzej J. Maciejewski}, title = {Taylor obstruction to the integrability of homogeneous potentials of degree two. An application of higher order variational equations}, journal = {Banach Center Publications}, volume = {95}, year = {2011}, pages = {173-185}, zbl = {1257.70022}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc94-0-10} }
Guillaume Duval; Andrzej J. Maciejewski. Taylor obstruction to the integrability of homogeneous potentials of degree two. An application of higher order variational equations. Banach Center Publications, Tome 95 (2011) pp. 173-185. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc94-0-10/